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CUSTOMEasyCrypto

bin64

XESXOR9/2/20261 min read
#crypto#custom#easy#base64-decode-to-binary-file#visual-inspection-of-decoded-i

bin64

Platform: CUSTOM | Category: Crypto | Type: Challenge | Difficulty: Easy | OS: N/A | **Author: XESXOR Techniques: Base64 decode to binary file, Visual inspection of decoded image

Summary

Walkthrough of the CUSTOM Crypto bin64. Task: Base64 encoded file. Solution: Decode with base64.b64decode() to reveal JPEG image containing flag text.

Description

Base64 encoded JPEG image. Decode and view to find flag text in image.

Solution

base64.b64decode() → JPEG image with text 'REDACTED' ‍​‌‌​​‌​​​‌‌​​‌​​​​‌‌​‌​​​​‌‌‌​​‌​​‌‌​​​‌​​‌‌‌​​​​​‌‌​‌‌​​​‌‌​​​​‍

Key Takeaways / Lessons

  • Mastering Base64 decode to binary file, Visual inspection of decoded image was key to this challenge.
  • Always check for common misconfigurations and verify assumptions.

Crafted by XESXOR Research • 2026-03-08 • CUSTOM • bin64 • Difficulty: Easy